Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 458 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a mirror (c) yeast (d) two chairs
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the room it stands in (c) time for colour to show (d) the length of the stem
3. 3.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it can pop loudly (d) it turns into a kite
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: a pebble is less dense than water. (a) False (b) True
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a stiff postcard (d) a glass of water
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) how much of each liquid (c) the same three liquids (d) the order of the layers
8. 8.True or false: a steel spoon floats on water. (a) True (b) False
9. 9.📘 What is water vapour? (a) water as a gas (b) salty water (c) a kind of smoke (d) tiny ice cubes
10. 10.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) gas from the rocket (d) the rowing boat
13. 13.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) wipe them dry (c) leave them wet (d) slide on them
14. 14.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
15. 15.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) safety scissors (c) sharp kitchen shears (d) gardening shears
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the kind of clay (c) the shape of the clay
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
19. 19.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
22. 22.🔍 Which is the odd one out? (a) a dry leaf (b) a steel spoon (c) an iron nail (d) a pebble
23. 23.🍯 Which of these is denser than water? (a) an ice cube (b) air (c) very salty water (d) cooking oil
24. 24.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
27. 27.💧 Which change is this: a puddle drying up? (a) condensation (b) melting (c) freezing (d) evaporation
28. 28.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
29. 29.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
30. 30.True or false: turmeric powder is needed for the paper helicopter. (a) True (b) False
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a magnet
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a flower stem
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
35. 35.🌈 In VIBGYOR, what number colour is yellow?
36. 36.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a battery cell (c) a pencil (d) a balloon
37. 37.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a glass marble (d) a flower stem
38. 38.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) yeast (c) cooking oil (d) a battery cell
39. 39.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
40. 40.True or false: a ball of clay floats on water. (a) True (b) False

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